他观察敏锐，但言语寥寥。

He observes keenly, but says little.

《牛津词典》

他的笑容里没有一丝一毫的感情，但很少有眼睛能近距离或敏锐地察觉到这一点。

His smile had no heart in it, but few eyes were near enough or sharp enough to detect that.

youdao

尽管我们的触感并不像盲人一样的敏锐，但如果我们出于好奇心而收藏一本布莱叶盲文的图书也没有什么问题。

Our sense of touch simply is not as sensitive as that of a blind person. That is not a problem if you happen to have picked up a Braille book out of curiosity.

youdao

But Milton's also sensitive to the fact that the very phrase "Christian epic" is in some way a contradiction in terms.

但弥尔顿对有些事实也很敏锐,某种意义上“基督教史诗“这个词语,本身就是矛盾的。

耶鲁公开课 - 弥尔顿课程节选